Signatures and flatness.
Correction to the paper "Signatures and flatness".
An algorithmic criterion for basicness in dimension 2.
Effectiveness - non effectiveness in semialgebraic and PL geometry.
Problemi di Cousin e di Poincaré per spazi di Stein non ridotti
Strata in the deformation of real isolated singularities are in general non contractible
Semialgebraicity of certain local loci
An embedding theorem for real analytic spaces
A relative embedding theorem for Stein spaces
Classification of obstructions for separation of semialgebraic sets in dimension 3.
Applying general results on separation of semialgebraic sets and spaces of orderings, we produce a catalogue of all possible geometric obstructions for separation of 3-dimensional semialgebraic sets and give some hints on how separation can be made decidable.
Smooth and analytic solutions for analytic linear systems.
We give some approximation theorems in the Whitney topology for a general class of analytic fiber bundles. This leads to a classification theorem which generalizes the classical ones.
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